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Identification of abnormal operating conditions and intelligent decision system

Xiuliang LI, Junjie JIANG, Hongye SU, Jian CHU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 456-462 doi: 10.1007/s11465-011-0224-0

Abstract:

In earth pressure balance (EPB) shield construction, the “plastic flow state” is difficultto form using the soil dug in the capsule because it can cause three abnormal operating conditions,present paper effectively integrates the mechanism of abnormal operating conditions and knowledge of soilThe model maximizes knowledge in improving the soil, construction experience, and data to optimize the

Keywords： earth pressure balance (EPB) shield machine     soil pressure cabin     abnormal operating condition     belief rule-base    

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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: First, an analytical solution for fracturing pressure in two different concentric regions of soil wasFirst, there is a linear relationship between the fracturing pressure and confining pressure in concentricsoil on the fracturing pressure approximately brings the weakening effect, and the greater strengthsoil has a strengthening effect on the fracturing pressure regardless of the proportion of internal-layersoil.

Keywords： hydraulic fracturing pressure     layered     cavity expansion theory     triaxial fracturing test     cohesive soil    

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Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0676-4

Abstract: decision-making approach for the deviation correction trajectory and posture rectification load for an earth pressureThe required results can be obtained regardless of the soil–rock compound stratum distribution.The maximum rectification moment in the rock layer is almost 12.6 times that in the soil layer.

Keywords： additional position change     deviation correction trajectory     earth pressure balance shield     mechanical    

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Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Frontiers of Structural and Civil Engineering   Pages 1387-1399 doi: 10.1007/s11709-023-0005-y

Abstract: Soil conditioning is essential for addressing the stratum applicability problem of earth pressure balanceUnder high water pressures, EPB shields spew water and soil when excavating coarse-grained strata.However, in current techniques, slurry, foam, and the other agents are mixed with soil separately, theirIt was found that the conditioning effect of bubble–slurry in coarse gravel soil was excellent and could

Keywords： EPB shield     bubble–slurry     soil conditioning     stability     permeability    

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Technology of strengthening soil and keeping pressure of large diameter slurry shield inside with highpressure

Meng Haifeng,Su Qinggui,Zhai Zhiguo

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 70-74

Abstract: the engineering example of underground diameter project replacing the cutter teeth inside with high pressure, the application of grouting reinforcement and pile foundation reinforcement in soil strengthening wasThe causes of gas leakage of inside with high pressure were analyzed, and the countermeasures were proposed

Keywords： shield     inside with high pressure     keep pressure     grouting    

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Intelligent technologies help operating mobile cabin hospitals effectively cope with COVID-19

Ying ZHOU, Lingling WANG, Lieyun DING, Zhouping TANG

Frontiers of Engineering Management 2020, Volume 7, Issue 3,   Pages 459-460 doi: 10.1007/s42524-020-0113-5

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Demonstration of the Principle of Interaction between Plastic Volume Strain and Shear for Rock and Soil

Wang Jingtao

Strategic Study of CAE 2006, Volume 8, Issue 9,   Pages 24-29

Abstract: paper proposed a principle of interaction between plastic volume strains of and shear for rock and soil

Keywords： principle of interaction between plastic volume strain and shear strain for rock and soil     constitutiverelation of rock and soil     pressure-sensitivity     dilatancy    

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Experimental study on concrete box culverts in trenches

Baoguo CHEN, Junjie ZHENG, Jie HAN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 73-80 doi: 10.1007/s11709-009-0008-3

Abstract: CGCDHBC) stipulates the computation of the design load on culverts primarily based on the linear earth pressureThe variations of foundation pressure and settlement were also analyzed.The result revealed that the soil arch forms when the backfill on the culvert reaches a certain heightThe soil arching effect reduces the stress concentration on the crown of the culvert but it is unstableThe vertical earth pressure on top of the culvert is significantly different from that recommended by

Keywords： culvert     vertical earth pressure     soil arch     full-scale experiment     numerical simulation    

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Experimental study of two saturated natural soils and their saturated remoulded soils under three consolidated undrained stress paths

Mingjing JIANG, Haijun HU, Jianbing PENG, Serge LEROUEIL

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 225-238 doi: 10.1007/s11709-011-0108-8

Abstract: strain-hardening, is remarkably influenced by the structure, void ratio, stress path and confining pressureExcess pore pressure during shearing is significantly affected by stress path.loose sand on character of strain-softening and are different from common clay on excess pore water pressure

Keywords： stress paths     static liquefaction     natural soil     remoulded soil     loess     structure     total strength indices     excesspore pressure    

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Mechanized Tunneling in Soft Soils: Choice of Excavation Mode and Application of Soil-Conditioning Additives

Rolf Zumsteg, Lars Langmaack

Engineering 2017, Volume 3, Issue 6,   Pages 863-870 doi: 10.1016/j.eng.2017.11.006

Abstract: Mechanized tunneling must adapt to the presence of sound and altered rock, as well as to inhomogeneous soilpast experiences with tunnel-boring machines (TBMs) in Switzerland, and specifically on the aspects of soilFor drillings with the less common earth pressure balanced mode (EPBM), continuous foam conditioningadditives led to new challenges during separation of the slurries (for SM) and disposal of the excavated soilIf the disposal of chemically treated soft soil material from the earth pressure balanced (EPB) drive

Keywords： Soil conditioning     Earth pressure balanced shield     Slurry shield     Mechanized tunneling    

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Model test study on surrounding soil stress distribution of DX pile

Tang Songtao,Chen Lihong,Yuan Xiyu

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 105-112

Abstract: At the meantime, miniature earth pressure cells are installed to test the stress in the surrounding soilof DX piles, so that the load transfer law in the soil can be researched.However, when the bell locates on the lower part of pile shaft, the stress of soil around the pile tipFor two-bell DX pile, the stresses around the two bells are similar, and the range of soil stress inducedFor the DX pile with three bells, the soil stress around the bells spread increasingly, while the amplitude

Keywords： DX pile     earth pressure cell     stress measurement    

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A New Airliner Cabin Air Quality Control System Based on Nanophotocatalytic Oxidation

Ning Xianwen,Li Yunze,Wang Jun

Strategic Study of CAE 2006, Volume 8, Issue 4,   Pages 60-62

Abstract:

The airliner cabin air quality is related to the safety, health and comfort of passengers and cabinConsidering the unique cabin environment, a new cabin air purifier system based on nanophotocatalyticoxidation reactor and the carbon adsorption/high efficiency particulate arresting filters for airliner cabin

Keywords： airliner cabin     photocatalytic oxidation     air purification     volatile organic compounds     activated carbon    

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Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 742-753 doi: 10.1007/s11709-021-0732-x

Abstract: Then, using the optimum PP addition, the bearing capacity of the soil was estimated through a seriesThe bearing capacity of sandy soil was improved by up to 30.7%.The ratio of the depth of the PP-reinforced soil to the diameter of the foundation model (H/D) of 1.25 could sufficiently strengthen sandy soil when the optimum PP ratio was used.capacity can be attributed to the chopped fibers in the PP and their multiaxial distribution in the soil

Keywords： shallow foundation     sandy soil     bearing capacity     soil improvement     pipe powder    

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Electromagnetic induction mapping at varied soil moisture reveals field-scale soil textural patterns

Hiruy ABDU, David A. ROBINSON, Janis BOETTINGER, Scott B. JONES

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 135-145 doi: 10.15302/J-FASE-2017143

Abstract: Knowledge of the spatial distribution of soil textural properties is important for determining soil moisturestorage and soil hydraulic transport properties.electromagnetic induction (EMI) mapping in low apparent electrical conductivity (EC ) soils at varying soilwater contents to capture time invariant properties such as soil texture.m × 50 m field included a subsurface gravelly patch in an otherwise homogeneous silt-loam alluvial soil

Keywords： soil electrical conductivity     soil texture mapping     temporal stability analysis    

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Combustion instability detection using the wavelet detail of pressure fluctuations

JI Junjie, LUO Yonghao

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 116-120 doi: 10.1007/s11708-008-0019-0

Abstract: A combustion instability detection method that uses the wavelet detail of combustion pressure fluctuationsTo confirm this method, combustion pressure fluctuations in a stoker boiler are recorded at stable andunstable combustion with a pressure transducer.It shows that the wavelet approximation indicates the general pressure change in the furnace, and the

Keywords： comparison     wavelet approximation     pressure transducer     general pressure     consistent    

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Title Author Date Type Operation

Identification of abnormal operating conditions and intelligent decision system

Xiuliang LI, Junjie JIANG, Hongye SU, Jian CHU

Journal Article

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Journal Article

Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Journal Article

Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Journal Article

Technology of strengthening soil and keeping pressure of large diameter slurry shield inside with highpressure

Meng Haifeng,Su Qinggui,Zhai Zhiguo

Journal Article

Intelligent technologies help operating mobile cabin hospitals effectively cope with COVID-19

Ying ZHOU, Lingling WANG, Lieyun DING, Zhouping TANG

Journal Article

Demonstration of the Principle of Interaction between Plastic Volume Strain and Shear for Rock and Soil

Wang Jingtao

Journal Article

Experimental study on concrete box culverts in trenches

Baoguo CHEN, Junjie ZHENG, Jie HAN

Journal Article

Experimental study of two saturated natural soils and their saturated remoulded soils under three consolidated undrained stress paths

Mingjing JIANG, Haijun HU, Jianbing PENG, Serge LEROUEIL

Journal Article

Mechanized Tunneling in Soft Soils: Choice of Excavation Mode and Application of Soil-Conditioning Additives

Rolf Zumsteg, Lars Langmaack

Journal Article

Model test study on surrounding soil stress distribution of DX pile

Tang Songtao,Chen Lihong,Yuan Xiyu

Journal Article

A New Airliner Cabin Air Quality Control System Based on Nanophotocatalytic Oxidation

Ning Xianwen,Li Yunze,Wang Jun

Journal Article

Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Journal Article

Electromagnetic induction mapping at varied soil moisture reveals field-scale soil textural patterns

Hiruy ABDU, David A. ROBINSON, Janis BOETTINGER, Scott B. JONES

Journal Article

Combustion instability detection using the wavelet detail of pressure fluctuations

JI Junjie, LUO Yonghao

Journal Article